TP-Link TL-WN851ND User manual

TL-WN851ND
300Mbps Wireless N PCI Adapter
Rev: 1.0.0
1910010422

COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice. is a registered trademark of
TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or
registered trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or used to make
any derivative such as translation, transformation, or adaptation without permission from
TP-LINK TECHNOLOGIES CO., LTD. Copyright © 2010 TP-LINK TECHNOLOGIES CO., LTD.
All rights reserved.
http://www.tp-link.com

FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
•Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1) This device may not cause harmful interference.
2) This device must accept any interference received, including interference that may cause
undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
Note: The manufacturer is not responsible for any radio or tv interference caused by
unauthorized modifications to this equipment. Such modifications could void the user’s authority
to operate the equipment.
FCC RF Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment. This device and its antenna must not be co-located or operating in conjunction
with any other antenna or transmitter.
“To comply with FCC RF exposure compliance requirements, this grant is applicable to only
Mobile Configurations. The antennas used for this transmitter must be installed to provide a
separation distance of at least 20 cm from all persons and must not be co-located or operating
in conjunction with any other antenna or transmitter.”

CE Mark Warning
This is a class B product. In a domestic environment, this product may cause radio interference,
in which case the user may be required to take adequate measures.
National Restrictions
2400.0-2483.5 MHz
Country Restriction Reason/remark
Bulgaria General authorization required for outdoor use and
public service
France
Outdoor use limited to 10 mW
e.i.r.p. within the band
2454-2483.5 MHz
Military Radiolocation use. Refarming of the 2.4 GHz
band has been ongoing in recent years to allow current
relaxed regulation. Full implementation planned 2012
Italy If used outside of own premises, general authorization
is required
Luxembourg None General authorization required for network and service
supply(not for spectrum)
Norway Implemented
This subsection does not apply for the geographical
area within a radius of 20 km from the centre of
Ny-Ålesund
Russian Federation Only for indoor applications
Note: Please don’t use the product outdoors in France.
This device has been designed to operate with the antennas listed below, and having a
maximum gain of 2 dBi. Antennas not included in this list or having a gain greater than 2 dBi are
strictly prohibited for use with this device. The required antenna impedance is 50 ohms.
To reduce potential radio interference to other users, the antenna type and its gain should be so
chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that permitted
for successful communication.

TP-LINK TECHNOLOGIES CO., LTD
TP-LINK TECHNOLOGIES CO., LTD.
South Building, No.5 Keyuan Road, Central Zone, Science & Technology Park, Nanshan,
Shenzhen, P. R. China
DECLARATION OF CONFORMITY
For the following equipment:
Product Description: 300Mbps Wireless N PCI Adapter
Model No.: TL-WN851ND
Trademark: TP-LINK
We declare under our own responsibility that the above products satisfy all the technical
regulations applicable to the product within the scope of Council Directives:
Directives 1999/5/EC
The above product is in conformity with the following standards or other normative documents:
ETSI EN 300 328 V1.7.1: 2006
ETSI EN 301 489-1 V1.8.1:2008 & ETSI EN 301 489-17 V1.3.2:2008
EN60950-1:2006
EN62311:2008
Person is responsible for marking this declaration:
Yang Hongliang
Product Manager of International Business

CONTENTS
Package Contents .................................................................................................... 1
Chapter 1 Introduction........................................................................................... 2
1.1 Overview of the Product.......................................................................................... 2
1.2 Features.................................................................................................................. 2
1.3 LED Status.............................................................................................................. 3
Chapter 2 Installation Guide.................................................................................. 4
2.1 Hardware Installation .............................................................................................. 4
2.2 Software Installation................................................................................................ 4
2.2.1 Overview .................................................................................................... 4
2.2.2 For Windows XP......................................................................................... 4
2.2.3 For Windows Vista ..................................................................................... 8
2.2.4 For Windows 7 ......................................................................................... 11
Chapter 3 Configuration Guide ........................................................................... 15
3.1 For Windows XP ................................................................................................... 15
3.1.1 Current Status .......................................................................................... 15
3.1.2 Profile Management ................................................................................. 16
3.1.3 Diagnostics............................................................................................... 24
3.2 For Windows Vista ................................................................................................ 25
3.3 For Windows 7 ...................................................................................................... 27
Chapter 4 QSS Configuration.............................................................................. 30
4.1 PBC (Push Button Configuration) method............................................................. 31
4.2 PIN method ........................................................................................................... 33
4.2.1 Enter a PIN into your AP device............................................................... 33
4.2.2 Enter the PIN from your AP device........................................................... 34
Appendix A: Specifications................................................................................... 36
Appendix B: Glossary............................................................................................ 37

Package Contents
The following items should be found in your package:
¾One TL-WN851ND 300Mbps Wireless N PCI Adapter
¾Quick Installation Guide
¾One resource CD for TL-WN851ND, including:
•TP-LINK Wireless Client Utility (TWCU) and Drivers
•User Guide
•Other Helpful Information
)Note:
Make sure that the package contains the above items. If any of the listed items are damaged or
missing, please contact with your distributor.
Conventions:
The ‘Adapter’ mentioned in this User Guide stands for TL-WN851ND 300Mbps Wireless N PCI
Adapter without any explanations.
1

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Chapter 1 Introduction
Thank you for choosing the TL-WN851ND 300Mbps Wireless N PCI Adapter!
1.1 Overview of the Product
The adapter is a 802.11n client device; it is designed to provide a high-speed and unrivaled
wireless performance for your notebook. With a faster wireless connection, you can get a better
Internet experience, such as downloading, gaming, video streaming and so on.
With the 802.11n technology, higher throughput improvements using MIMO (multiple input,
multiple output antennas), the TL-WN851ND’s auto-sensing capability allows high packet transfer
rate of up to 300Mbps for maximum throughput. It has good capability on anti-jamming, and it can
also interoperate with other wireless (802.11b) products. The adapter supports WEP, WPA and
WPA2 encryption to prevent outside intrusion and protect your personal information from being
exposed.
The adapter is easy to install and manage. The Quick Setup Wizard guides you step-by-step
through the installation process; the TP-LINK Wireless Client Utility helps you create a wireless
connection immediately.
With unmatched wireless performance, reception, and security protection, the TL-WN851ND is
the best choice for easily adding or upgrading wireless connectivity to your notebook computer.
1.2 Features
¾Complies with IEEE 802.11n, IEEE 802.11g, IEEE 802.11b standards
¾Supports WPA/WPA2 data security, IEEE802.1x authentication, TKIP/AES encryption,
64/128/152-bit WEP encryption
¾Supports high rate of up to 300Mbps for maximum throughput, supports automatically
adjust to lower speeds due to distance or other operating limitations
¾Provides 32-bit PCI interface
¾Supports Ad Hoc and Infrastructure modes
¾Good capability on anti-jamming
¾Supports roaming between access points when configured in Infrastructure mode
¾Ease to configure and provides monitoring information
¾Supports Windows 2000, Windows XP, Windows Vista, Windows 7
¾Two antennas which are listed in a format of 2x2 for two receivers and two transmitters

TL-WN851ND 300Mbps Wireless N PCI Adapter
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1.3 LED Status
Status Working Status
Off
The driver has not been installed;
The adapter's radio has been disabled.
Flashing Slowly The driver has been installed but there is no data being transmitted
or received.
Flashing Quickly There is data being transmitted or received.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Chapter 2 Installation Guide
2.1 Hardware Installation
To install the adapter, follow these steps listed below:
1. Turn off your desktop PC and disconnect the power.
2. Remove your PC case and locate an available PCI slot on the mianboard. Remove the metal
slot cover on the back of the PC. Check with your computer manufacturer for instructions if
needed.
3. Slide the PCI Adapter into the PCI slot. Make sure that all of its pins are touching the slot's
contacts. Once the adapter is firmly in place, secure its fastening tab to your PC's chassis
with a mounting screw. Then, close your PC case.
4. Reconnect your PC’s power and turn on your desktop PC.
2.2 Software Installation
2.2.1 Overview
The Adapter’s Setup Wizard will guide you through the Installation procedure for Windows 2000,
Windows XP, Windows Vista and Windows 7. The Setup Wizard will install the TP-LINK
Wireless Client Utility (TWCU) and drivers.
When you install the hardware prior to before installing the software, the system will prompt
“Found New Hardware Wizard”, click Cancel, and run the Setup Wizard program on the
CD-ROM.
2.2.2 For Windows XP
1. Insert the Resource CD into your CD-ROM drive, and the Figure 2-1 will appear. To
continue, select the TL-WN851ND.There will be a menu including: Install Driver & Utility,
Install QSS and User Guide.
Figure 2-1
2. Click Install Driver & Utility to load the following screen.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-2
3. Soon, Figure 2-3 will display after a moment. Click Next to continue.
Figure 2-3
4. After that, you should choose a Setup type. It is recommended that you select Install
Client Utilities and Driver. Select Install Driver Only to install driver only (shown in
Figure 2-4). Click Next to continue.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-4
5. Click Browse to change the destination location for the software, then click Next in the
screen below (shown in Figure 2-5).
Figure 2-5
6. After that, select the program folder, you should create a new folder name or select one
from the Existing Folders list. It is recommended that you keep the default setting. Click
Next to continue the installation.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-6
7. Choose configuration tool, if you are not sure, please leave it default. Then click Next to
continue.
Figure 2-7
8. Wait a while for the setup as shown in Figure 2-8.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-8
9. After all the steps above, you will see the screen below, click Finish to complete the
installation.
Figure 2-9
2.2.3 For Windows Vista
1. Insert the Resource CD into your CD-ROM drive, and the Figure 2-11 will appear. To
continue, select the TL-WN851ND.There will be a menu including: Install Driver &
Utility, Install QSS and User Guide.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-10
2. Click Install Driver & Utility to load the following screen.
Figure 2-11
3. Soon, Figure 2-12 will display after a moment. Click Next to continue.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-12
4. Click Yes to continue.
Figure 2-13
5. The following page will display and please wait a moment.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-14
6. Click Finish to complete the installation.
Figure 2-15
2.2.4 For Windows 7
1. Insert the Resource CD into your CD-ROM drive, and the Figure 2-16 will appear. To
continue, select the TL-WN851ND.There will be a menu including: Install Driver & Utility,
Install QSS and User Guide.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-16
2. Click Install Driver & Utility to load the following screen.
Figure 2-17
3. Soon, Figure 2-18 will display after a moment. Click Next to continue.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-18
4. Click Yes to continue.
Figure 2-19
5. Wait a while for the setup as shown in Figure 2-20.

TL-WN851ND 300Mbps Wireless N PCI Adapter
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Figure 2-20
6. Then you will see Figure 2-21. Click Finish to complete.
Figure 2-21